vB Easy Archive - Video Encoding for W760

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Video Encoding for W760
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Posted by: ViciousXUSMC

I am having some issues finding a good encoding setting for the W760, it supports H264 & AAC.

I have encoded some audio files with the highest grade AAC settings and it plays fine, and did some videos with x264 and they did not play because of "high profile" settings the phone does not support.

To make life easier on me instead of manual encoding with x264 I downloaded and installed MeGUI a well known do it all GUI for x264 and it has many presets and of those it has several for mobile phones.

I tried each and every one of them and all of them play, but the problem is the video is studdering or playing slow so it causes a sync issue with the audio.

Its random on how bad it is and it doesnt seem to be consistent with all videos, as in one setting works fine for say a music video but then I do an anime episode and it wont work.

I have lowered my settings so low now that the quality is starting to suck (150kbps) so I am starting to think maybe the phone really does not handle H264 very well or I need some special settings.

So anybody have experience with this and any recommended settings? Seems like I never noticed this before I debranded the phone, I wonder if it had effected it in any way, though I cant see how.

I have the files on a 8gb SanDisk Ultra M2 card.

Posted by: bodeh6

Regular settings should be .mp4 (it supports h.264 encoding), 320x240, 25 FPS, <500 Kbps video, <128 Kbps audio (.aac is fine).

Posted by: ViciousXUSMC

Hmm been doing native FPS on the clips in this case 30fps. I took out the VBV buffer settings in x264 and seems to work better now.

I found the best audio is 32kbps HE-AAC its super small file size but still sounds perfect.

Video about 150kbps is good, at about 200kbps its gets a bit slow and can cause sync issues. I have no idea how it could pull off 500kbps I tried one test clip and it ran slow as can be.

However quality is fine @ 150kb/s just a very slight artifacting of the subtitles that you cant really see, 200kb/s is great quality but like I said borderline audio sync issues.

One strang thiing I noticed today is fast foward issues.

I have a few episodes of robot chicken and can fast forward fine on them (it only errored on me 1 time) but for my Naruto episodes if I fast foward even a little I get the orange popup screen with an error playing the clip.

Both clips encoded with the same setting, so I guess maybe its due to the length, robot chicken is like 12 minutes long while naruto is like 25.

Im going to do a 25fps @ 250kb/s test now and see if the FPS was the key ingrediant, I know 250kb/s will lag with my previous settings but now maybe it wont. I have to find the right way to do it though.

My first test just slowed the video down to 25pfs from 30, its going to be avisynth CovertFPS or ChangeFPS I will try both and see wich works best.

Edit:

Posting back, both convertfps and changefps work to changed the frame rate without messing up the clip. I slightly prefer convertfps.

Tested the file on my laptop and it was perfect, when I put it on the phone it still had delay in playing the video, infact it seemed identical to the native 30fps clip so seems frame rate had no effect.

It was a 250kb/s clip

Looks like the only solution is to just use a bit rate of about ~150

So guess I will start another test cycle with 150kb/s and start seeing what options I can change to maybe pull more quality out of that bitrate.

motion estimation and the deblock filter are the first two.

Posted by: ViciousXUSMC

I sent an email to sony and they got back with me the next day. Here is what they sent me:

Basic video MPEG-4 Visual Simple, Level 0
Video resolution 176x144 (QCIF)
Frame rate (fps) 15
Bit rate (kbps) 64
Optimal video XviD MPEG-4 Visual Simple,
Modified Level 3
Video resolution 320x240 (QVGA)
Frame rate (fps) 25
Bit rate (kbps) 300
Basic audio LC-AAC
Channels 2
Sample rate (KHz) 44.1 / 48
Bit rate (kbps) 64
Optimal audio Apple / Nero LC-AAC
Channels 2
Sample rate (KHz) 44.1 / 48
Bit rate (kbps) 96

Though it doesnt make sense in a way because I encoded a xvid file with autogk and when put it in a .mp4 container and it would not play at all.